High availability: HAProxy, Keepalived, Pacemaker and Corosync
Exit

Lesson 7 of 12 · Failover and clusters

Pacemaker and Corosync: cluster architecture and quorum

50 min Rocky Linux 9 Versions Pacemaker 2.1 / Corosync 3.1 (Rocky 9, Debian 12, Ubuntu 24.04)

Objective

Understand what a failover cluster is on Linux, what Corosync and Pacemaker are for, how the cluster decides it is allowed to act (quorum), and how to read its state.

This lesson is part of the full course

Unlock High availability: HAProxy, Keepalived, Pacemaker and Corosync to read every lesson, do the exercises, access the simulations and earn your certificate.

Already enrolled? Log in.